25591055 has 8 divisors (see below), whose sum is σ = 35096352. Its totient is φ = 17548128.

The previous prime is 25591051. The next prime is 25591057. The reversal of 25591055 is 55019552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25591055 - 2² = 25591051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25591051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365552 + ... + 365621.

It is an arithmetic number, because the mean of its divisors is an integer number (4387044).

Almost surely, 2^25591055 is an apocalyptic number.

25591055 is a deficient number, since it is larger than the sum of its proper divisors (9505297).

25591055 is an equidigital number, since it uses as much as digits as its factorization.

25591055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731185.

The product of its (nonzero) digits is 11250, while the sum is 32.

The square root of 25591055 is about 5058.7602236121. The cubic root of 25591055 is about 294.6881891614.

The spelling of 25591055 in words is "twenty-five million, five hundred ninety-one thousand, fifty-five".